Pile fabric.



J. W. SOHN.

FILE FABRIC.

arrucmou FILED MAR. 28. m7.

Patented June 18, 1918.-

FIG

STATES PATENT UF-FTQE.

JOHN W. SCI-IN, OF ROXBOBOUGI-I, PENNSYLVANIA, ASSIGNOR TO A. T. BAKER &COM- PANY, F MANAYUNK, PHILADELPHIA, PENNSYLVANIA, A COPARTNERSHIP COM-POSED 0F ALFRED '1'. BAKER AND ALFRED T. BAKER, JR.

PILE FABRIC.

Application filed March 28, 1917.

To all whom it may concern:

Be it known that I, JOHN WV. SonN, a citizen of the United States,residing at Roxborough, county of Philadelphia, and

State of Pennsylvania, have invented a new and. useful Improvement inPile Fabrics, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, whichform a part of this specification.

My invention relates to cut pile fabrics wherein two backing fabrics,connected by pile warps extending continuously through both fabrics andfrom one to the other, are

cut in a plane midway between and parallel to both backing fabrics toform two halves, each constituting a complete finished fabric having onone face a multitude of short upright cut pile ends.

The object of the invention is to so weave the fabric that with theemployment of eight series of pile warp threads, of which one of eachseries is arranged in a set of eight pile warp threads, an even anduniform distribution of the cut pile ends will be produced on the tuftedface of each cut and finished backing fabric and wherein the pilethreads are so arranged relatively to one another that they bind eachother to the weft throughout a large part of the fabric, therebyminimizing the amount of ground warp required to impart the necessarystrength, tightness and rigidity to the backing.

The fabric displays characteristics c0inmon to woven pile fabrics inthat it is composed of a top backing, a bottom backing, pile warpthreads which interlace with the weft or filler threads of both backingsand also extend between the top and bottom fabrics, and binder warpthreads each of which extend through only a single backing. The fabricmay be conveniently woven on a double loom, two shots of weft beingthrown simultaneously.

A preferred embodiment of the invention is shown in the accompanyingdrawings, in which:

Figure 1 is a cross-section through the fabric parallel to the warpshowlng four pile warp threads of a set and the corresponding binder orground warp.

Fig. 2 is a section parallel to and between Specification of LettersPatent.

Patented J line 18, 1918.

Serial No. 157,892.

the top and bottom fabrics, looking in the direction of the arrow, Fig.1.

I employ, as hereinbefore stated, eight pile warp threads in a set,marked respectively 1, 2, 3, l, 5, (S, 7 and 8. In Fig. 1, for purposesof clearness, only four pile threads are shown, it being understood,however, that where any pile thread of the four shown engages a weft ofone backing in a particular way, a corresponding pile thread, not shown,engages a weft of the other backing in the same way. Thus, in Fig. 2,the interlacing of pile warps 5, 6, 7 and 8 with the weft of the backingshown is precisely the same as the interlacing of pile warps 1, 2, 3,and l with the corresponding weft threads of the backing not shown.

The weft threads of the upper backing are marked a, .7), c, J, c, f, g,it, and of the lowering backing 2', y', 7:, l, m, n, 0, [2.

Each pile thread extends successively over one weft thread of onebacking fabric, thence under two weft threads of the same backing,thence over the next weft thread of the same backing, thence across tothe other backing, thence over a weft thread in the second backing,thence under two weft threads of the second backing, thence over thenext weft thread of the second backing and thence across to the firstbacking: and so on.

Pile thread 5 (which, for purposes of clearness, is omitted from Fig. 1)operates as a pair with pile warp 1; that is, along any given number ofpairs of weft threads, pile thread 5 intersects the weft of one backingin the same manner that pile warp l. intersects the weft of the otherbacking. This causes pile warps 1 and 5, in passing from one backing toanother, to intersect between two adjacent pairs of weft.

In the same manner pile threads 9 and 0, 3 and 7, and 4- and 8 operaterespectively in pairs.

However, it will be observed, from Fig. 2, that the eight pile threadsof a set all engage differently the same combination of weft threads.Thus pile thread 1 passes over weft shots c and (Z of one backing; andin the same backing pile thread 2 passes over weft shots I; and g; 3over f and a; 4: over (Z and g; 5 over 0 and it; 6 over 0 and 7 over I)and c; and 8 over It and c.

Thus an absolutely even distribution of the pile threads is effected,and the pile threads of each half set bind in pile threads of the samehalf set throughout a large part of the fabric. The latter feature of myimproved pile fabric permits of the employment of a single binding orground warp thread in each backing for each half set of pile threads.The ground warp is caused to pass successively under two adj acent weftthreads, successively over, under and over the next three, under thenext two and over the next, and so on, as clearly shown in Figs. 1 and2; thereby binding in all the pile threads that have not been bound inby other pile threads of the same half set.

Having now fully described my invention, what I desire to claim andprotect by Letters Patent is j 1. A pile fabric composed of two backingfabrics comprising weft threads and pile warp threads all interwovenwith the weft threads of both backings and extending between thebackings, there being in a repeat eight pairs of weft threads, the pilethreads being arranged in sets of eight, each of said pile threadsextending over one, under two and over one weft thread of one backingand thence extending across to and interwoven in a similar manner withfour weft threads of the other backing, the eight pile threads of a setall interweaving differently with the eight pairs of weft threads ofeach repeat so that one pile thread of each half set crosses from onebacking to another between every two adjacent weft threads of eachbacking, whereby an even distribution of the cut pile ends in thefinished fabric is effected.

2. A pile fabric composed of two backing fabrics comprising weft threadsand pile warp threads all interwoven with the weft threads of bothbackings and extending between the backings, there being in a repeateight pairs of weft threads, the pile threads being arranged in sets ofeight, each of said pile threads extending over one, under two and overone weft thread of one backing and thence extending across to andinterwoven in a similar manner with four weft threads ofthe otherbacking, four adjacent pile warp threads interweaving with one backingin respectively the same way as the next four adjacent warp threadsinterweave with the opposite backing, the eight pile threads of a setall interweaving differently with the same combination of weft threadsof each backing, thereby effecting an even distribution of the cut pileends in the finished fabric, and also causing the pile threads to bindin each other throughout a large part of the fabric, thus effecting asaving of ground warp.

3. A pile fabric composed of two backing fabrics comprising weft threadsand pile warp threads all interwoven with the weft threads of bothbackings and extending between the backings, there being in a repeateight pairs of weft threads, the pile threads being arranged in sets ofeight, each of said pile threads extending over one, under two and overone weft thread of one backing and thence extendingacross to and inter'woven in a similar manner with four weft threads of the other backing,four adjacent pile warp threads interweaving with. one backing inrespectively the same way as the next four adjacent warp threadsinterweave with the opposite backing, the eight pile threads of a setall interweaving differently with the same combination of weft threadsof each backing, and a ground warp in each backing for each half set ofpile threads and interwoven with the weft in such manner as to bind inthe pile threads not bound in by other pile threads of the same halfset.

In testimony of which invention, I have hereunto set my hand, atPhiladelphia, on this 23rd day of March, 1917.

JOHN W. SOHN.

Copies of this patent-may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

